Um easy way that I know grab a digital multimeter connect one prob to one side off the battery and the other prob to the other side. If you get a -18 volts you have that means your have figure that red lead off the multimeter is negative and the black lead off your multimeter is positive. This is an easy way to tell. hope this helps.
I have a 12V test light, but I don't know how to use it. It's more basic than a multimeter, and the battery I'm testing is also 12V, but nothing happens. Maybe my battery is dead?
If your cutting off the car charger adapter and splicing the wires look at the wires. One wire coming out of the charger is rounded and one has flat edges. The rounded wire is your positive lead and the edges is your negative. To insure your correct go to the charger where the wires comes out just in case you had already split the wires. Last resort is to take the charger apart and look how the wires are terminated. Remember if you cross polarity when wiring up you will smoke it. Hope this helps
Thank you so very much for the picture of the DeWalt 18v XRP battery dipicting the positive and negative side of the battery. I appreciate it very much. D.Everett
People Please! Stop answering other people questions with answers to different questions. If you want to offer other questions with their answers, fine, do so after you answer the questions asked or say that you don't know but you have other possible useful information.
get a mason jar and fill it with salt water. get two stripped wires and put one end of each in the water, touch the other two ends to the terminals of the battery.
The wire with more bubbles coming off is the negative side.
. I've only seen one DeWalt battery and it wasn't 18V, but on that one, the negative was on the left side (holding the drill with the chuck pointed away from you).
. A voltmeter, as per Sparkington, is your best bet.
Discussions
11 years ago
Um easy way that I know grab a digital multimeter connect one prob to one side off the battery and the other prob to the other side. If you get a -18 volts you have that means your have figure that red lead off the multimeter is negative and the black lead off your multimeter is positive. This is an easy way to tell. hope this helps.
Reply 4 weeks ago
I have a 12V test light, but I don't know how to use it. It's more basic than a multimeter, and the battery I'm testing is also 12V, but nothing happens. Maybe my battery is dead?
6 years ago
If your cutting off the car charger adapter and splicing the wires look at the wires. One wire coming out of the charger is rounded and one has flat edges. The rounded wire is your positive lead and the edges is your negative. To insure your correct go to the charger where the wires comes out just in case you had already split the wires. Last resort is to take the charger apart and look how the wires are terminated. Remember if you cross polarity when wiring up you will smoke it. Hope this helps
Reply 5 months ago
I dont smoke anymore so in case I cross polarity wiring up what would I need to do differently than popop1111?
9 months ago
I need find out on the battery 18 volt battery charger DeWalt what side is positive and negative on a circuit board is it y1 Y2 y5
Reply 7 months ago
Nice
1 year ago
Thank you so very much for the picture of the DeWalt 18v XRP battery dipicting the positive and negative side of the battery. I appreciate it very much. D.Everett
1 year ago
People Please! Stop answering other people questions with answers to different questions. If you want to offer other questions with their answers, fine, do so after you answer the questions asked or say that you don't know but you have other possible useful information.
11 years ago
get a mason jar and fill it with salt water. get two stripped wires and put one end of each in the water, touch the other two ends to the terminals of the battery. The wire with more bubbles coming off is the negative side.
11 years ago
. I've only seen one DeWalt battery and it wasn't 18V, but on that one, the negative was on the left side (holding the drill with the chuck pointed away from you). . A voltmeter, as per Sparkington, is your best bet.